Re: 2004 Tahoe 5.3 weird idle
those e-3s will cause the coil to burn up if not carefull best plug for that truck is the ac delco 41-110 Iridium plugs runn 9-11 dollars each but they will run 100k miles with no changing, the e-3's are a resister plug which will not let all the energy from the coil though
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